The Vacuum Water Deaeration (VWD) deaerates water down to a residual oxygen concentration below 20 ppb. Optionally the water can be cooled down, filtered or sterilized with ultraviolet light. The function of the unit can be monitored and documented by an in-line oxygen analyzer at the outlet of the unit.

The process is employed in the brewing, beverage, food and chemical-pharmaceutical industries, wherever water with lowest oxygen content is required to assure high product quality and stability.

The system is characterized by high operational reliability, low CO2 and energy consumption.

Technical Description
The water is distributed homogeneously to the structured packing at the top of the column. The CO2 is fed in at the bottom of the column. The water slowly flows downwards through the structured packing in counter current flow to the CO2. A long and intensive contact between water and stripping gas is ensured by the high-performance structured packing. CO2 is dissolved in the water up to a level of 0.2 g/l and at the same time suppresses the oxygen. The operation of the column under vacuum, with a pressure about 80 mbar, reduces the partial pressure of gas. Low oxygen values and CO2-consumption are reached. Optionally, nitrogen can be used as stripping gas.

The deaerated water is pumped out of the bottom of the column with a frequency controlled pump. Optionally the water can be cooled down in a plate heat exchanger by glycol or ammonia. Sensors for oxygen, level, flow and temperature monitor the proper functioning of the system.

The unit can be controlled by a local PLC with a touch panel or by a process control system. Designed for high hygienic standards, all common cleaning agents in the beverage and chemicalpharmaceutical industry can be used for CIP cleaning.

Technical Specification

Capacity 25 to 1,000 hl/h / 2.5 to 100 m3/h

Residual oxygen content < 20 ppb / 0.02 ppm

CO2 consumption 0.4 g/l

CO2 supply min. 6 barg / ≥ 99,98 % purity

Cooling media glycol or ammonia

The company
corosys Prozeßsysteme und Sensoren GmbH was founded in 2001 by partners with many years of experience in the field of process technology, automation and instrumentation. Focus is on the production and supply of high quality sensors, components, complete process systems and process automation for the brewing, beverage and chemical-pharmaceutical industries, as well as biotechnology.

The group
Together with NORMAG Labor- und Prozesstechnik GmbH, a highly specialized supplier of borosilicate glass components, equipment and plants to the chemical-pharmaceutical industry, we are a small company group, cooperating in several fields such as process automation.

Looking back
Today we already look back on very successful years with, in part, above average growth, establishing corosys as a leading supplier in key product areas.
This is documented by the large number of more than 200 installed process systems, as well as by outstanding projects, marking the steady growth and development of the company.

Partners
One important factor for our company´s success is our cooperation with highly specialized partners. With our common know how, we can cover all specific aspects and technical requirements of our customers.

Environmental statement
It is our constant aim to minimize any negative impact of our daily work and our products on the environment by

preventing the unnecessary consumption of energy and resources

purchasing equipment and consumables based on ecological criteria

preferring materials and products made of environmentally sustainable materials

minimizing the consumption of energy and resources and emissions of our products